JP2003000500A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner which has a high reliability and whose manufacturing cart can be reduced. SOLUTION: The hose part 24 of a hose body 23 is communicated with a cleaner body 11. The feeder line 25 of the hose part 24 is connected with the cleaner body 11 electrically. The communicating tube part 33 of an on-hand operation part 32 is communicated and rotatably connected with the hose part 24 in the circumferential direction. A feeder line 39 is set inside the communicating tube part 33. The feeder line 25 of the hose part 24 is connected with the feeder line 39 of the on-hand operation part 32 by a feeder line 40 set between the hose body 24 and the on-hand operation part 32. The feeder line 40 wound in spiral can be expanded and contracted. The feeder line 40 is expanded when the communicating tube part 33 is turned in the circumferential direction to the hose part 24. No occurrence of contact defects improves reliability only because the feeder line 40 is extensibly set. The hose part 24 and the communicating tube part 33 can be connected with simple structure. Thereby the manufacturing cost of the hose part 24 and the communicating tube part 33 can be chopped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vacuum cleaner having a first connecting pipe electrically connected to a cleaner main body.

[0002]

2. Description of the Related Art Conventionally, as an electric vacuum cleaner of this type, for example, a structure shown in FIG. 4 is known.

The electric vacuum cleaner shown in FIG. 4 is provided with a hose body 1 as a first connecting pipe which is detachably connected to a main body suction opening opened in front of a main body of a cleaner (not shown). The hose body 1 is formed into a flexible elongated cylindrical shape, and a transmission line 2 which is a lead wire serving as a first conducting wire is embedded in the peripheral surface in a spirally wound state. There is. A sliding contact 3 electrically connected to the transmission line is attached to the outer peripheral surface of the tip of the hose body 1.

The tip of the hose body 1 is fitted and inserted into a communicating pipe portion 5 as a second connecting pipe of the hand operating portion 4 and is rotatably connected to the communicating pipe portion 5. A sliding contact 6 that is slidably electrically connected to the sliding contact 3 of the hose body 1 is attached to the inner peripheral surface of the base end of the communication pipe portion 5. The sliding contact 6 is electrically connected to a transmission line 7 as a lead wire which is a second conductive wire attached to the communication pipe section 5.

As a result, the hose body 1 is connected to the communication pipe portion 5.
Even if the hose is rotated, the sliding contact 3 of the hose body 1 and the communication pipe portion 5
The sliding contact 6 of the hose body 1 and the sliding contact 3 continue to be electrically connected to each other, so that the transmission line 2 of the hose body 1 and the transmission line 7 of the communicating pipe portion 5 are electrically connected. Keep doing

[0006]

However, in the electric vacuum cleaner shown in FIG. 4, the hose body 1 and the communication pipe portion 5 are respectively connected while the communication pipe portion 5 is rotatably connected to the hose body 2. Sliding contacts 3 and 6 are attached to the hose body 1 and the communicating pipe portion 5, respectively, in order to continue to electrically connect the transmission lines 2 and 7 of the above.
In No. 6, reliability against contact failure is a problem, and
There is a problem that the manufacturing cost is increased due to the complicated structure.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an electric vacuum cleaner having improved reliability and reduced manufacturing cost.

[0008]

According to a first aspect of the present invention, there is provided a first vacuum cleaner having a cleaner main body and a lead wire electrically connected to the cleaner main body, which is connected to the cleaner main body. A connection pipe, a conductor electrically connected to the conductor, and a second connection pipe communicatably connected to the first connection pipe so as to be rotatable in the circumferential direction; and the first connection pipe. Second
And a stretchable conductor wire that connects the two conductor wires to each other.

In this structure, the lead wire electrically connected to the cleaner body is attached to the first connecting pipe communicating with the cleaner body. Then, the second connecting pipe is connected to the first connecting pipe so as to be rotatable in the circumferential direction. Further, the conductor wire attached to the second connecting pipe is electrically connected to the conductor wire of the first connecting pipe by the stretchable conductor wire arranged between the first connecting pipe and the second connecting pipe. Connect to. As a result,
When the second connecting pipe is rotated in the circumferential direction with respect to the first connecting pipe, the conducting wire connecting the conducting wire of the first connecting pipe and the conductive material of the second connecting pipe extends. Therefore, since the conductive wire of the first connecting pipe and the conductive wire of the second connecting pipe are only electrically connected by the expandable and contractible conductive wire, contact failure and the like cannot occur and reliability is improved, and Since the connection between the first connecting pipe and the second connecting pipe has a simple structure, the manufacturing costs of the first connecting pipe and the second connecting pipe are reduced.

A vacuum cleaner according to a second aspect of the present invention is the vacuum cleaner according to the first aspect, wherein a rotation angle is restricted between the first connecting pipe and the second connecting pipe. .

In this structure, the rotation angle between the first connecting pipe and the second connecting pipe is regulated so that the second connecting pipe is rotated with respect to the first connecting pipe. At this time, the conductor wire that electrically connects the conductor wire of the first connecting pipe and the conductor wire of the second connecting pipe is not pulled more than the limit, and the disconnection of the conductor wire can be prevented. The reliability of the connection between the connection pipe and the second connection pipe is further improved.

A vacuum cleaner according to a third aspect is the vacuum cleaner according to the first or second aspect, wherein the first connecting pipe and the second
The rotation with respect to the connecting pipe is restored by the elastic force of the conducting wire connecting the conducting wire of the first connecting pipe and the conducting wire of the second connecting pipe.

In this structure, the elastic force of the conductor wire that electrically connects the conductor wire of the first connecting pipe and the second connecting pipe causes the first connecting pipe and the second connecting pipe to rotate. Is restored, the operation of returning the rotation of the second connecting pipe after rotating the second connecting pipe with respect to the first connecting pipe is not necessary, which improves usability and improves the usability of the first connecting pipe. The disconnection of the conductive wire that electrically connects the conductive wire and the conductive wire of the second connecting pipe is further prevented.

According to a fourth aspect of the present invention, in the electric vacuum cleaner according to any of the first to third aspects, the second connecting pipe is detachably connected to the main body of the vacuum cleaner.

In this structure, the second main body is attached to the vacuum cleaner body.
If the connection pipe of is detachably connected, the first connection pipe can be rotated with respect to the second connection pipe connected to the cleaner body, so that the structure of the cleaner body is simplified and The usability of this vacuum cleaner body is further improved.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION The structure of an electric vacuum cleaner according to a first embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

In FIG. 1 and FIG. 2, 11 is a cleaner body, and this cleaner body 11 is a lower case 1 having an open upper surface.
2, and an upper case 13 that closes the rear upper surface of the lower case 12 has a main body case 15 as a case body that is joined to the peripheral edge including the front surface by sandwiching the bumper 14 and opening the front upper surface portion. . A lid 16 that rotatably closes the opening on the front upper surface is formed on the main body case 15 so as to be rotatable.

The body case 15 has a swivel wheel (not shown) mounted on the lower surface on the front side in the traveling direction. A large-diameter driven rear wheel 17 is rotatably provided on the rear side surface of the body case 15. As a result, the cleaner body 11 can travel on the floor surface by the turning wheel and the driven rear wheel 17. In addition, a handle 18 that is vertically slidable is provided on the top of the main body case 15.

Further, in the approximate center of the front side of the cleaner body 11,
A main body suction port 21 for sucking air from the outside is opened. And the cleaner body 11 communicating with this body suction port 21
An electric blower 22 that receives outside air from the main body suction port 21 and discharges the outside air to the outside from an exhaust port (not shown) is housed inside. The electric blower 22 is installed in the rear center of the cleaner body 11.

On the other hand, in the main body suction port 21 of the cleaner main body 11,
A hose body 23 for extending the main body suction port 21 is attached. The hose body 23 is provided with a flexible, elongated, substantially cylindrical hose portion 24 as a first connecting pipe.
A transmission line 25 as a first conductor electrically connected to the electric blower 22 of the cleaner body 11 is wound around the circumference of the hose 24 in a spiral shape, that is, a spiral shape. It is installed. This transmission line 25 is the vacuum cleaner body
It is housed in 11 and is electrically connected to a control circuit as control means (not shown) for controlling the drive state of the electric blower 22.

A mounting pipe 26 as a second connecting pipe which is detachably fitted and connected to the main body suction port 21 of the cleaner main body 11 is circumferentially provided in the base end region which is one end of the hose portion 24. It is attached so that it can be turned toward.

At the tip end region of the hose body 23 which is the other end of the hose portion 24, as shown in FIG.
27 is connected in a connected state. Substantially annular flange portions 28, 29 projecting along the circumferential direction of the rotating body 27 are integrally provided at both end regions of the outer peripheral surface of the rotating body 27 in the axial direction. As a result, the outer peripheral surface of the rotating body 27 between the flange portions 28, 29 becomes a conductor holding portion 31 having a concave cross section.

Further, with the turning body 27 connected to the tip end region of the hose portion 24 of the hose body 23, the turning body 27 and the tip end region of the hose portion 24 have a substantially cylindrical hand-operated operating portion 32 which is a hand grip. Is rotatably fitted and connected to the base end side thereof in a circumferential direction. The hand operation unit 32 is bent in a substantially V shape.

Further, the hand operation part 32 includes a communicating pipe part 33 as a second connecting pipe to which the tip of the hose part 24 is connected,
The communication pipe portion 33 is provided with a grip portion 34 that is provided so as to be branched rearward. At the base end of the grip portion 34, an operation portion 35 for operating the electric blower 22 in the cleaner body 11 is provided. The operation unit 35 includes a switch board 36 formed of, for example, a membrane switch. Further, the communication pipe section 33 of the hand operation section 32 is connected to the hose section 24 of the hose body 23.
A substantially cylindrical hose covering portion 37 as an opening / closing means for covering the rotating body 27 to which is connected is rotatably fitted and attached.

Here, a transmission line 39, which is a lead wire as a second conducting wire, is electrically connected to the switch substrate 36. The transmission line 39 is electrically connected to a transmission line 40, which is a lead wire serving as a third conductive wire arranged in the conductive wire holding portion 31, via a connector 41. This transmission line 40
Is electrically connected to the transmission line 25 attached to the hose portion 24 of the hose body 23. Therefore, these transmission lines 39,40
Is electrically connected to a control circuit that controls the electric blower 22 via a transmission line 25.

Further, the transmission line 40 is arranged in a meandering state between the rotating body 27 and the communication pipe section 33 of the manual operation section 32. As a result, the transmission line 40 is connected to the rotating body 27 and the communication pipe portion 33.
It can be stretched between.

An elongate and substantially cylindrical extension tube 42 is connected to the tip of the hand operation section 32 in a detachable manner. Further, an elongated substantially cylindrical extension pipe 43 is also detachably connected to the tip of the extension pipe 42. A suction port body 44, which is installed on a surface to be cleaned such as a carpet in a room and sucks dust on the surface to be cleaned, is detachably attached to the tip of the extension pipe 43. In addition, the extension pipe 4
In addition to 2,43, accessories such as a suction port body 44, a crane mouth (not shown), a furniture brush, and a gap nozzle can be attached.

Next, the operation of the first embodiment will be described.

First, the fitting pipe 26 of the hose body 23 is fitted and connected to the main body suction port 21 of the cleaner main body 11, and the extension pipes 42 and 43 are sequentially connected to the tip of the hand operation part 32, and this extension is performed. A suction port body 44 is connected to the tip of the pipe 43.

Next, the switch board 36 of the manual operation section 32 is turned on, and the electric blower 22 is driven by the control circuit. Then, the intake air containing dust is sucked into the electric blower 22 from the suction port body 44 to the extension pipes 43, 42, the hand operation part 32 and the hose body 23.

When the hand operation section 32 is rotated with respect to the hose section 24 of the hose body 23, the communication pipe section 33 of the hand operation section 32 is rotated.
The transmission line 40 extends between the rotating body 27 and the rotating body 27.

From this state, when the rotation of the hand operation portion 32 with respect to the hose body 23 is returned, the transmission line 40 contracts between the communication pipe portion 33 and the rotating body 27.

As described above, according to the first embodiment, the transmission line 40 electrically connected to the transmission line 25 of the hose body 23 is connected to the communication pipe portion 33 of the manual operation portion 32 and the rotating body. It is arranged so that it can expand and contract with 27, and this transmission line 40 is the transmission line of the grip portion 34.
Since it is electrically connected to the hose body 23, when the hand operation part 32 is rotated with respect to the hose body 23, the communication pipe part 33 of the hand operation part 32 is rotated.
The transmission line 40 extends between the rotating body 27 and the rotating body 27.

As a result, as compared with the case where the hose body 23 and the manual operation section 32 are electrically connected by a sliding contact so as to be freely rotatable, the transmission line 40 is simply attached so as to be expandable and contractible, so that a contact failure or the like occurs. Therefore, the reliability between the hose body 23 and the manual operation section 32 can be improved.

Further, since the hose body 23 and the manual operation section 32 are simply electrically connected by the stretchable transmission line 40, the hose body 23 and the manual operation section 32 can be easily connected. Since it can be configured, the manufacturing cost of each of the hose body 23 and the manual operation section 32 can be reduced, and the hose body 23 and the manual operation section 32 can be made smaller and lighter.

Further, as compared with the case of the sliding contact, the hose body
Since the pressing force acting between the hose body 23 and the manual operation part 32 is unnecessary, the friction coefficient of the rotation between the hose body 23 and the manual operation part 32 can be made smaller, so that the hose body 23 and the manual operation part 32 can be made smaller. Rotation can be made easier.

Next, a second embodiment of the present invention will be described with reference to FIG.

The vacuum cleaner shown in FIG. 3 is basically the same as the vacuum cleaner shown in FIGS. 1 and 2, except that the vacuum cleaner between the hose portion 24 of the hose body 23 and the manual operation portion 32 is provided. The movement angle is regulated, and the rotation between the hose portion 24 and the manual operation portion 32 is restored by the elastic force of the coil-shaped transmission line 40.

On the outer peripheral surfaces of the rotating body 27, which face each other, there are provided rotation restricting pieces 51 protruding in the radial direction of the rotating body 27 along the axial direction of the rotating body 27. . Each of these rotation restricting pieces 51 is provided with the hand operation part 32.
In the state of being fitted and inserted in the communication pipe portion 33, the communication pipe portions 33 project toward the opposite sides of the communication pipe portion 33.

On the upper side of the inner peripheral surface of the communication pipe part 33 of the hand operation part 32, a fixing piece protruding in the axial direction of the communication pipe part 33 along the axial direction of the communication pipe part 33. 52 are provided. The fixing piece 52 is provided when the rotating body 27 is rotated in the circumferential direction in the communication pipe portion 33 of the hand operation portion 32.
The rotation restricting piece 51 of the rotating body 27 abuts via the transmission line 40, and restricts the rotation angle of the rotating body 27 with respect to the communication pipe portion 33, that is, the rotation range. Specifically, the rotating body 27 can be rotated about 90 ° in the left-right direction with respect to the communication pipe portion 33 of the hand operation unit 32.

Further, both ends of the transmission line 40 are provided between both side surfaces of the fixed piece 52 of the communication pipe portion 33 and side surfaces of the rotation restricting piece 51 of the rotating body 27 facing both side surfaces of the fixed piece 52. Each part is attached. The transmission line 40 is spirally wound and acts as a coil spring having an elastic force. As a result, when the rotating body 27 is rotated in the circumferential direction with respect to the communication pipe portion 33, one of the transmission lines 40 is crushed and the other transmission line 40 is crushed. Since 40 is stretched, by releasing the rotation of the rotating body 27 with respect to the communication pipe section 33, the rotation of the rotating body 27 with respect to the communication pipe section 33 is returned to the initial state from the elastic force of each of these transmission lines 40. Restore.

Further, each of these transmission lines 40 rotates the rotating body 27 in the circumferential direction with respect to the communication pipe portion 33 so that one of the rotation restricting piece 51 and the fixed piece 52 is connected. Transmission line 40
Is completely crushed, the other rotation control piece
The length dimension is such that the transmission line 40 attached between the 51 and the fixed piece 52 does not extend completely.

As a result, the electric vacuum cleaner shown in FIG.
Since the hose portion 24 of the hose body 23 is rotatable with respect to the communication pipe portion 33 of the hand operation portion 32, the same operational effect as the electric vacuum cleaner shown in FIGS. 1 and 2 can be obtained.

Further, since the rotation restricting piece 51 is provided on the outer peripheral surface of the rotating body 27 and the fixing piece 52 is provided on the inner peripheral surface of the communication pipe portion 33 of the hand operation portion 32, the communication pipe of the hand operation portion 32 is provided. The rotation angle of the hose portion 24 with respect to the portion 33 in the circumferential direction is regulated by one of the rotation regulating pieces 51 and the fixing piece 52. As a result, the transmission line 40 can be prevented from being broken when the hose portion 24 is rotated with respect to the manual operation unit 32.
The reliability of the connecting portion between the hose portion and the hose portion 24 can be further improved.

Here, since the hose portion 24 of the hose body 23 is flexible, even if the rotation angle of the hose portion 24 is restricted with respect to the manual operation portion 32, the hose portion 24 itself bends and
It is possible to rotate the hand operation part 32 with respect to the cleaner body 11 from the apparent appearance. Therefore, it is not necessary to secure the rotation angle of the hose portion 24 with respect to the hand operation portion 32 of about 90 ° or more, and even if the rotation angle of the hose portion 24 with respect to the hand operation portion 32 is restricted, the usability for the user is changed. Absent.

Further, each transmission line 40 is spirally wound to form a coil spring shape, and these transmission lines 40 are rotated restricting pieces 51.
Since the hose portion 24 is rotated with respect to the manual operation portion 32, the transmission line 40 is crushed and the transmission signal of the other transmission is attached by mounting the hose portion 24 on the hand operation portion 32. Since the wire 40 is stretched, when the hose portion 24 is released from the hand operation portion 32, the transmission line
40 The hose part 24 against the manual operation part 32 by each elastic force
The rotation of is restored to the initial state.

As a result, the hose portion is
Since the work of returning the rotation of the hose portion 24 to the hand operation portion 32 after the rotation of 24 is unnecessary, the usability for the user can be further improved and the disconnection of the transmission line 40 can be further prevented.

In each of the above embodiments, the hose body 23
Although the connection between the hose portion 24 and the manual operation portion 32 has been described, the rotating body 27 is attached to the rotating body 27 in the mounting pipe 26 that is detachably connected to the main body suction port 21 of the cleaner main body 11. If you connect the hose part 24, the main body suction port 21 of the vacuum cleaner main body 11
Since the hose portion 24 is rotatable with respect to the mounting pipe 26 with the mounting pipe 26 attached thereto, it is possible to obtain the same operational effect as the above-described respective embodiments.

Further, even if it is not the transmission line 40 for electrically connecting the transmission line 25 of the hose body 23 electrically connected to the control circuit of the cleaner body 11 and the transmission line 39 of the hand operation unit 32, For example, the transmission line 40 can be adapted as a power supply line to a motor for rotating a rotary brush (not shown) provided in the suction port body 44.

[0050]

According to the electric vacuum cleaner of the first aspect of the present invention, the conductive wire of the first connecting pipe and the second wire of the expandable and contractible conductor arranged between the first connecting pipe and the second connecting pipe are provided. When the second connecting pipe is rotated in the circumferential direction with respect to the first connecting pipe, the conducting wire of the first connecting pipe and the second connecting pipe are electrically connected to each other. Since the conducting wire connecting with the conductive of the connecting pipe extends, it is possible to improve reliability without causing contact failure and the like, and it is possible to simplify the connection between the first connecting pipe and the second connecting pipe. The manufacturing costs of the first connecting pipe and the second connecting pipe can be reduced.

According to the electric vacuum cleaner of the second aspect, in addition to the effect of the electric vacuum cleaner of the first aspect, the rotation angle between the first connecting pipe and the second connecting pipe is restricted. When the second connecting pipe is rotated with respect to the first connecting pipe, the second conducting wire is not pulled more than the limit, and the disconnection of the second conducting wire can be prevented. The reliability of connection between the connecting pipe and the second connecting pipe can be further improved.

According to the electric vacuum cleaner of claim 3, in addition to the effect of the electric vacuum cleaner of claim 1 or 2, the conductor wire of the first connecting pipe and the second connecting pipe are electrically connected. Since the rotation of the first connecting pipe and the second connecting pipe is restored by the elastic force of the conductive wire, this rotation is performed after the second connecting pipe is rotated with respect to the first connecting pipe. Since the returning operation is unnecessary, the usability can be improved, and the disconnection of the conductor wire that electrically connects the conductor wire of the first connecting pipe and the conductor wire of the second connecting pipe can be further prevented.

According to the electric vacuum cleaner of claim 4, in addition to the effect of the electric vacuum cleaner of any one of claims 1 to 3,
If the second connecting pipe is detachably connected to the cleaner body, the first connecting pipe can be rotated with respect to the second connecting pipe connected to the cleaner body. It is easier and the usability of this vacuum cleaner can be improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a part of an electric vacuum cleaner according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the same electric vacuum cleaner.

FIG. 3 is a cross-sectional view showing a part of a second embodiment of the present invention.

FIG. 4 is a cross-sectional view showing a part of a conventional electric vacuum cleaner.

[Explanation of symbols]

11 Vacuum cleaner body 24 Hose part as the first connecting pipe 25 Transmission line as first conductor 26 Mounting pipe as second connecting pipe 33 Communication pipe part as second connecting pipe 39 Transmission line as second conductor 40 Transmission line as third conductor

Claims (4)

[Claims] 1. A cleaner body, a first connecting pipe to which a conductor electrically connected to the cleaner body is attached and which communicates with the cleaner body, and a conductor electrically connected to the conductor. A second connection pipe attached to the first connection pipe and rotatably connected to the first connection pipe so as to be rotatable in the circumferential direction; and the second connection pipe disposed between the first connection pipe and the second connection pipe. An electric vacuum cleaner, comprising: a conductive wire that extends and contracts to connect both conductive wires. 2. Between the first connecting pipe and the second connecting pipe,
The vacuum cleaner according to claim 1, wherein a rotation angle is regulated. 3. The rotation between the first connecting pipe and the second connecting pipe is restored by the elastic force of the conducting wire connecting the conducting wire of the first connecting pipe and the conducting wire of the second connecting pipe. The vacuum cleaner according to claim 1 or 2, characterized in that: 4. The electric vacuum cleaner according to claim 1, wherein the second connecting pipe is detachably connected to the cleaner body.